Full TGIF Record # 225430
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=197
    Last checked: 07/18/2013
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Publication Type:
i
Report
Author(s):Yelverton, Fred H.; Gannon, Travis W.; Warren, Leon S.
Author Affiliation:North Carolina State University, Raleigh, NC
Title:Silvery thread (Bryum argenteum) moss control on bentgrass putting greens
Section:Weed management in turf grass
Other records with the "Weed management in turf grass" Section
Meeting Info.:San Antonio, Texas: January 23-25, 2006
Source:Proceedings: Southern Weed Science Society 59th Annual Meeting. Vol. 59, 2006, p. 124.
Publishing Information:Champaign, Illinois: Southern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Agrostis stolonifera; Bryum argenteum; Golf greens; Herbicide efficacy; Herbicide evaluation; Moss control
Abstract/Contents:"Silvery thread moss (Bryum argenteum) has become an increasing weed problem of putting greens possibly due to lower mowing heights and discontinued use of mercury-based fungicides. The consequence of moss invasion is reduced turfgrass quality as well as a nonuniform putting surface. Silvery thread moss encroachment occurs first in thin and weak turf including crowns of undulated putting greens which suffer from repeated scalping and spreads to remaining areas readily by sexual and asexual reproduction. Control measures for silvery thread moss in bentgrass putting greens have been researched minimally due to the recent spread of the problem. Previous research suggests silvery thread moss can be suppressed in golf course putting greens with iron and nitrogen-containing fertilizers as well as with chlorothalonil. Research trials were initiated to evaluate carfentrazone on bentgrass putting greens for silvery thread moss control. Carfentrazone has recently received registration and is available alone or in mixes with broadleaf herbicide materials. Trials were initiated in May 2004 and included one, two, or three applications of carfentrazone (Quicksilver 1.9 EW) applied at 1.03 or 2.06 fl oz per acre. Sequential applications were applied three weeks after the previous application. Additional research trials were initiated in July 2005 evaluating carfentrazone alone or with a non-ionic surfactant. Application rates evaluated in 2005 included 6.7 or 12.7 fl oz per acre applied once or twice. Each trial included two applications of chlorothalonil applied at 174.2 fl oz per acre. At four weeks after initial application in 2004, single applications of carfentrazone (1.03 or 2.06 fl oz per acre) were providing less than 5% control while two or three applications were providing minimal control ranging from 30 - 40%. Additionally, two applications of chlorothalonil provided no control at four weeks after initial treatment. At eight weeks after initial treatment, three applications of carfentrazone provided 10 - 20% silvery thread moss control while other treatments provided no control. In 2005 trials, one or two applications of carfentrazone (6.7 fl oz/a) provided 38 and 100% control, respectively, at four weeks after initial treatment. At six weeks after initial treatment, one application (6.7 fl oz/a) provided 50% silvery thread moss control while two applications provided 100% control. One or two applications of carfentrazone (12.7 fl oz/a) provided 100% silvery thread moss control while two applications of chlorothalonil provided 75% control. The addition of a non-ionic surfactant increased silvery thread moss control, although it was not consistent across all trials. Additionally, research trials were initiated that evaluated one or two applications of carfentrazone (6.7 or 12.7 fl oz per acre applied alone or with non-ionic surfactant) for bentgrass tolerance on A1, A4, L93 and Crenshaw bentgrass. No bentgrass phytotoxicity was observed at any time. These data indicate carfentrazone provides a viable option for silvery thread moss control in bentgrass putting greens."
Language:English
References:0
Note:"Vision for the future"
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yelverton, F. H., T. W. Gannon, and L. S. Warren. 2006. Silvery thread (Bryum argenteum) moss control on bentgrass putting greens. South. Weed Sci. Soc. Proc. 59:p. 124.
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http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=197
    Last checked: 07/18/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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